History of Astronomy |
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Page 2
... heavens . If the appearance of a comet was sometimes noted simul- taneously with the death of a great ruler , or an eclipse with a scourge of plague , these might well be looked upon as causes in the same sense that the veering or ...
... heavens . If the appearance of a comet was sometimes noted simul- taneously with the death of a great ruler , or an eclipse with a scourge of plague , these might well be looked upon as causes in the same sense that the veering or ...
Page 3
... heavenly motions than was possible without these records . So Hipparchus , about 150 B. C. , and Ptolemy a little later , were able to use the observations of Chaldĉan astrologers , as well as those of Alexandrian astro- nomers , and to ...
... heavenly motions than was possible without these records . So Hipparchus , about 150 B. C. , and Ptolemy a little later , were able to use the observations of Chaldĉan astrologers , as well as those of Alexandrian astro- nomers , and to ...
Page 6
... heaven , which was a solid vault , or hemisphere , with its concavity turned downwards . The stars seemed to be fixed on this vault ; the moon , and later the planets , were seen to crawl over it . It was a great step to look on the ...
... heaven , which was a solid vault , or hemisphere , with its concavity turned downwards . The stars seemed to be fixed on this vault ; the moon , and later the planets , were seen to crawl over it . It was a great step to look on the ...
Page 9
... heaven is a complete sphere , and that stars are shining at mid - day , although eclipsed by the sun's brightness . It is also asserted , in the book called Chu - King , that in the time of Yao the year was known to have 3654 days , and ...
... heaven is a complete sphere , and that stars are shining at mid - day , although eclipsed by the sun's brightness . It is also asserted , in the book called Chu - King , that in the time of Yao the year was known to have 3654 days , and ...
Page 11
... heavenly bodies do not move by chance , nor by their own will , but by the determinate will and appointment of the gods . They recorded these move- ments , but mainly in the hope of tracing the will of the gods in mundane affairs ...
... heavenly bodies do not move by chance , nor by their own will , but by the determinate will and appointment of the gods . They recorded these move- ments , but mainly in the hope of tracing the will of the gods in mundane affairs ...
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Common terms and phrases
accepted accurate ancient appear astronomers attraction bodies bright calculations called catalogue cause centre century Chinese circle comet compared complete Copernicus determined diameter direction discovered discovery distance earth eclipse effect elements enabled epicycles equal error explain fact fixed follow force four Galileo gave give given gravitation heavens held Herschel increased interesting Jupiter Kepler knowledge known later LIBRARIES light lunar Mars mass mathematical mean measured method miles moon moon's motion move Newton noticed object observations Observatory opposition orbit original parallax pass period photographic physical planet planetary pole position predicted progress proper motion proved records researches revolve ring rotation round Royal satellites seems seen showed SIGILLUM solar system spectroscope spectrum stars studied sun's supposed surface tables telescope theory tion trace true Tycho Brahe UNIVERSITY VERITAS